Bottle is one of the most common and widely used cosmetic containers. This is mainly because most cosmetics are liquid or viscous paste with relatively good fluidity. Therefore, bottles can be used to contain and protect the contents. The capacity of the bottle is large or small, which can meet the needs of a variety of cosmetics.
The shape of the bottle is ever-changing, but no matter how it changes, it is the change or combination of several bodies, among which the most important ones are cylinder and cuboid, because the vertical load strength and internal pressure resistance strength of such geometry bottle shape are better. The bottle body usually has no sharp corners or sharp edges, and the smooth linear shape with gentle transition is adopted between the various parts, so the design can also give people a soft feeling.
Appearance: it is not only related to the appearance and texture of the package, but also the protective effect of the package is mainly realized by selecting the appropriate materials. The packaging materials of cosmetics are mainly as follows:
Plastic
At present, the plastics used for cosmetic packaging are mainly PET, PE, PVC and PP. Among them, PET is mainly used for packing water and beverage, but because of its high strength, good transparency, good chemical stability and high barrier property, it is widely used in the packaging of cream, lotion and make-up water in recent years.
In recent years, the application of PET resin in cosmetic containers has developed rapidly. PET bottles and cans are mainly used in skin care products, shower gel and cosmetics.
For some products, PET bottle is the most ideal packaging material. Plastic is easy to handle and can be designed into many fashionable and transparent classic products.
In addition, PET bottles are soft to the touch, and its surface can be decorated in a variety of ways, which is the only packaging material. Nowadays, the application of PET plastic is more and more extensive, and its future in the field of cosmetic packaging will be broader.
At present, more and more thick shell tanks are produced with polyethylene glycol modified polyethylene terephthalate (PETG).
The reason is that as like as two peas, PETG is easy to dye different colors. Even after anti UV treatment, the transparency is still the same, and the appearance of the product is exactly the same as that of glass.
The newly developed polyethylene extended blow molding technology can overcome the disadvantage of low transparency of polyolefin blow molding bottle, and is used in many cosmetics producing countries.
Mixing injection molding machine can simultaneously inject two different colors of raw materials into the mold to produce two-color mixed patterns.
The packaging materials used for different types of cosmetics are very different.
Plastic containers are mainly used for oil products, such as hair oil, hair wax, sunscreen, bath oil, massage oil, etc. The consumption of emulsion products, such as cleaning cream, cleaning milk, moisturizing cream, nutrition cream, snowcream, cold cream, hair cream, etc., and surfactant solution products, such as shampoo, bath liquid, etc., accounts for 40% of the total consumption of cosmetic packaging.
